How much should saline needles for the quantitative VDRL test deliver?

The quantitative VDRL (Venereal Disease Research Laboratory) test is a serological test used to detect the presence of antibodies which may indicate syphilis. The saline needles used in this test are calibrated to deliver a specific volume for accurate mixing and testing. The standard delivery for saline needles in this context is 100 drops per milliliter. This calibration ensures that the reagents are dispensed in a consistent manner, vital for achieving reliable and reproducible results.

Using a calibrated amount like 100 drops/mL allows laboratory technicians to maintain accuracy in their testing protocols, minimizing discrepancies that could arise from using different volumes or drop sizes. This precise control of liquid volume is crucial in immunology testing, where variations can lead to incorrect interpretations of antibody levels and ultimately affect patient diagnosis and management.

In contrast, the other options represent volumes that would not align with the standardized practice for this test, leading to potential inaccuracies in the quantitative assessment of the VDRL test results. Therefore, understanding and utilizing the correct drop calibration ensures the reliability of test outcomes in a clinical laboratory setting.